Aftermarket alternator mounting bracket for 1970 340

Well, i wasn't specifically referring to them, the spacer and bolts they sell are kinda cool, my deal is Mixing the Pulleys AND brackets off my ol 66 273, to a 73 340 (converted to Steel Crank) I have No overheating issues, but that damn Alternator Alignment required me to mill a spacer down... But, Again, mismatched Year parts... from what I read. And the fact that the 66 to 73 was an AC engine... the three grooves are probably heavier than I need, ( I wanted to get to CVS set up, but I didn't jump on em when I Should have) but they Work Darn Good!
I just learned today, from old notes I had made regarding my pully set, they are from pre 70 model. Here we go again. Dip into the till of money for more parts. Was proceeding with post 70 setup because engine is a 70 model with timing mark on driver side. Only stumbled across notes looking for something else. I'm also running ATI damper assuming pully placement would be stock. I may be milling spacer as well before it's done.